Re: [Discuss-gnuradio] FFTW Problems

[Eric Blossom]

On Thu, Sep 21, 2006 at 05:51:31PM -0500, Ron Shaffer wrote:
> I'm trying to build with the latest svn source as of this past weekend 
> in FC 4.  below is a snip of my configure and make outputs
> ... Can someone help me with this please - I'm getting unresolved 
> externals on FFTW -
> ..Ron

You don't have a version of FFTW installed that includes the single
precision versions.

The easiest way to fix it is to build fftw from source as described in
the README at the top of the gnuradio tree.

    (3)  FFTW 3.0 or later            http://www.fftw.org

    IMPORTANT!!!  When building FFTW, you MUST use the --enable-single and
    --enable-shared configure options.  This builds the single precision
    floating point version which we use.  You should also use either the
    --enable-3dnow or --enable-sse options if you're on an Athlon or Pentium
    respectively.



Eric